Packing



Nov. 12,1935. B..'V. ANOSCHENKO 9,

' PACKING Filed Abril 20, 1954 F IG. 3

WITNESSES: INVENT 5.1112 Bows V. ANoscH o ATTORNEY Patented Nov. 12,1935 ztzosss UNITED STATES PATENT OFFICE PACKING Boris V. Anoschenko,Philadelphia, Pa., asslgnor to Westinghouse Electric 8; ManufacturingCompany, East Pittsburgh, Pa., a corporation of Pennsylvania ApplicationApril 20, 1934, Serial No. 721,472

3 Claims. (01.286-10) My invention relates to metallic sealing stripsstrip may be carried either by a fixed or by a for interposingresistance to leakage of fiuid between spaced members and it has for anobject a to provide an improved type of strip as well as means forfastening the latter to its supporting member.

More particularly, my invention relates to relatively rotatable memberswherein the space therebetween' is sealed by a thin metallic strip,which may be carried by either member, the strip being-disposed in andfitting against one side wall of a groove provided in a member and beingheld in the groove by a caulking strip which is deformed so that aportion thereof is engaged underneath or behind a shoulder provided byrecessing the opposite wall of the groove. This type of packing isadvantageous in-that the metallic strip may be made quite thin andsusceptible of being worn down in case of rubbing. Also, the caulkingstrip may be made of material which is suitably soft, not only tofacilitate deformation of the strip incident to fastening the sealingstrip in place, but also to provide for easy removal of both strips, thedeformed portion of the caulking strip engaging underneath the shoulderbeing sheared off by the latter incident to upward withdrawal of. thecaulking strip from the groove. The sealing strip should, of course, betough, resistant to corrosion, capable of being deformed to fit circulargrooves, and susceptible of being worn down in case oi rubbing, and I-have foundthat molybdenum stainless steel satisfies these needs. Hence,a further object of my invention is to provide packing having theseadvantageous features of construction and of operation.

These and other objects are effected by my invention as will be apparentfrom the following description and claims-taken in connection with theaccompanying drawing, forming a part of this application, in which:

Fig. 1 is a sectional detail view showing my improved packing;

Fig. 2 shows a modified form; and

Fig. 3 indicates diagrammatically how a caulkmg strip may be removed.

In Fig. 1, I show members l0 and II having a space I! therebetween, thespace being sealed by the sealing strip l3 shown as being carried by thethey may have relative movement',and the sealing.

movable member. This type of packing may be advantageously employed inmany situations, for example, with glands anddummies of steam turbinesand withbearings.

Referring now. to the sealing strip I3 and the manner in which it isconnected to its supporting member, in Figs. 1 and 2, I show the striphearing against one side wall ii of a groove it provided in thesupporting member. A caulking strip 10 i1 is disposed in the groove andit has a lip ll deformed to engage behind the shoulder provided by therecess 20 formed in the opposite side wall II of the groove.

The sealing strip l3 and the caulking strip I'I llv and behind theshoulder and this operation caus- :6

ing. the strip to be pushed against the strip II so as to grip thelatter with respect to the wall groove i5.

The gripping action referred to is in itself sum cient to hold thesealing strip It in place; how- 30 ever, 'a more secure fastening may behad by having' the sealing strip I3 provided with a foot 12 whichengages-the bottom of the groove It, the top of the foot being engagedby the caulking strip II. In Fig. 2, I show a form of my inven- 36 tionwherein the strip it has no-footand is held in place by the gripp naction of the caulking strip l'l. p

I find that, if the strip 13 ismade of relatively thin molybdenumstainless steel, it has all of the 4 properties generally desirable fora sealing strip.

First of all, such material is highly resistant to it is connected, andwill wear down readily in 45 case of rubbing; The caulking strip I1 ispreferably made of soft steel as it should deform easily incident tomounting of the sealing strip and should have a portion thereof readilyshearable as hereinafter pointed out. Referring to the radial recess 20and to the caulking strip I! more specifically, it will be noted thatthe recess is ,disposed adjacent to the top portion of the groove l6 andthat the upper or outer portion of the deformble strip is deformed so asto engage in the recess. The annular recess 20 is preferably provided bya cylindrical surface I9 and a conical surface I911. The cylindricalsurface faces inwardly to form the shoulder behind which the deformableportion of the strip engages andit intersects the side surface or wall2! of the groove to provide a sharp corner or shearing edge I922.

In case it is desired to replace the sealing strip, this may be readilydone, as the caulking strip is made of such material and is so connectedin the groove that it may be readily removed.

' As indicated in Fig. 3, it is only necessary to pry up one end of thecaulking strip I! so that the end maybe engaged by the diametral opening24 in a key 25 having a handle 26, whereupon the key may be turned andthe caulking strip wrapped therearound, upward withdrawal of thecaulking strip in this manner resulting in shearing oil. of the deformedportion engaging underneath the shoulder i9.

1 Not only do these features provide for ready tight insertion of thecaulking strip and deformation thereof to engage in the recess, but alsothe shearing edge is effectively positioned relatively to the caulkingstrip to secure shearing thereof incident to removal of the strip.

While I have shown my invention :in-but one form, it will be obvious tothose skilled in the art that it is not so limited, but is susceptibleof vari.

" ous changes and modifications, without depart- 7 ing from the spiritthereof, and I desire, therefore, that only such limitations shall beplaced thereupon as are imposed by the prior art or as are specificallyset forth in the appended claims.

What I claim is: I 1. The combination with a pair. of members having aspace therebetween, of sealing means for said space including a thinmetallic strip fitting against one side wall of a groove provided in oneof said members and having its outer edge 10 defining close clearancewith respect to the other member; the opposite wall of said groovehaving a recess formed therein near to the top of the groove; and acaulking strip in said groove, fitting against the "strip and againstsaid opposite 15 wall inwardly of the recess, and having its outerportion deformed to engage in the recess.

2. The combination with a pair of members having a space therebetween,of sealing means for said space including a thin metallic strip 90fitting against one side wall of a groove provided in one of saidmembers and having its outer edge defining close clearance with respectto the other member; the opposite wall of said 3. The combination asclaimed in claim 2 35 wherein the caulking strip is grooved at its topto provide a lip portion deformable to engage in said recess.

BORIS V. ANOSCHENKO.

